Telescope.



WINFIELD S. STOGKWELL, OF ATHOL, MASSACHUSETTS.

TELESCOPE.

Specification of Letters Patent.

Patented July 6, 1909.

Application filed. February 27, 1907. Serial No. 359,656.

To all whom 'it may Be it known that WELL, a citizen of the UnitedStates, residing at Athol, in the county ol Worcester and State oiMassachusetts, have invented certain new and useful Improvements inTeletripod scopes, of which the following is a tion.

My invention relates to a telescope7 surveyors sight tube or similar'instrument, universally adjustably mounted on its stand or tripod tofacilitate the leveling ol the same and providing in combinationtherewith novel means for adjusting the instrument vertically andhorizontally within said mounting.

speciiica I, WINEIELD S. Srooiij My invention resid particularly in thei 'following features of construction aud arrangement hereinafterdescribed with reference to the accompanying drawings, in which- Figure1 is a side elevation of my improvements7 Fig. 2 is a plan view thereof,and Fig. 3 is a section on the line 3MB of Fig. 2 loolring in thedirection of the arrows.

Referring to the figures l represents a sighting tube 1 mounted throughthe sup porting' collars 2 and 3 carried on the ends ot the yoke trame4. The collars 2 and 3 are constructed of greater diameter than thesight tube 1 in order to allow of adjustment within themselves of saidtube; collar 2 being provided with alined threaded openings in avertical plane for the reception of the adjusting screws 5 havingconical points iitting into depressions or concavities in the tube 1,and collar 3 being provided with similar alined threaded openings in ahorizontal plane for the reception ol adjusting screws 6, operating' onthe sight tube 1 in a similar manner as the adjusting screws 5. Thus itwill be seen that said tube 1 may be adjusted vertically or horizontallyas desired by the use of the screws 5 and 6 arranged in the collars theyoke frame.

The yoke frame 4 supports upon its upper face, a level 7, and is mountedin turn upon a circular plate 8 having a centrally located boss 9 on itslower face. Aball 1() is mounted l l l l l l l l l l on a stem 11extending centrally through said loess 9 and plate 8 and through theyolie frame 4;. A nut 12a is suitably connected on the upper portion etthe stein 11 forming holding means for the yoke trame 4. The or standcomprises legs 12 ot the ordinary type mounted beneath the stationary'plate 13. As shown in Fig. 1 the ball 1() is seated in a socket formedby a con cavity in the plate 13 and a concavity arranged in a plate 1.4Ladjustably connected to said plate 13 by means of screws 15. Thus theyoke frame carrying the sight tube may be swung or adjusted to a levelposition by means of adjusting thumb screws 16 mounted through thestationary plate 13 and bearing upwardly against the plate 8 to adjustsaid frame to a level position as read from the spirit level '7. Thus itwill be seen that l provide an improved device in which every adjustmentis provided for and in which a novel, simple and inexpensiveconstruction is employed to this end.

Having thus 'fully described my invention what l claim is:

A device of the character described7 com rising a suitably supportedyoke frame provided with relatively large integral cylindrical collarsat the extremities thereof7 one of said collars being provided withdiametrically arranged screw-threaded apertures in a substantiallyvertical plane, and the other ol' said collars being provided withdialnetrically arranged screw-threaded apertures in a substantiallyhorizontal plane., set scre\` s operating through said apertures uponeach of said collars, a sight tube provided with recesses upon theperiphery thereol adjustably mounted through each of said cylindricalcollars and upon said set screws therein, said set screws working withinsaid apertures upon the periphery of said sight tube, substantially asdescribed.

ln testimony whereoi` l ailiX my signature 2 and 3 respectively of inpresence of two witnesses.

WVINFIELD S. STOCKELL.

Witnesses:

C. EUGENE TANDY, CEAS. E. INGALLS.

